Measuring apparatus for rolled material



' Dec. 18, 1934. R, K ONENBERG 1,984,837

MEASURING APPARATUS FOR ROLLED MATERIAL Filed Aug. 27, 1929 4 Sheets-Sheet 1 Invenfar:

{rave/45. 1

Dec. 18,1934. R, K NENBERG 1,984,837

MEASURING APPARATUS FOR ROLLED MATERIAL Filed Aug. 27, 1929 4 Sheets-Sheet 2 fig: 2.

I Invenfar:

Dec. 18, 1934. I R, KRONENBERG 1,934,837

' MEASURING APPARATUS FOR ROLLED MATERIAL 4 Filed Aug. 27, 1929 4 Sheets-Sheet 3 Dec; 18, 1934. R, KRONENBERG 1,984,337

MEASURING APPARATUS FOR ROLLED MATERIAL Filed Aug. 27, 1929 4 Sheets-Sheet 4 I m/emar:

struction of the device'it is for making even thesmallest deviation sure of the spring, by the Patented Dec. 18, 193

' UNITED STATE MEASURING Rudolf KronenbergHaus ,Kronenberg, Germany Application August 27,

In Germany 1 Claim.

The invention relates-to a measuring device which enables deviations in the thickness of an article from the required thickness to be determined, and

visible. Besides the measurin in consequen'ce'of the special conparticularly suitable s clearly g of articles of any kind, the device is particularly suitable formeasuring and checking rolled material of any kind.

The particular advantage of in the factthat it enables be effected not merely from during the whole of the roll makes any deviations from the visible.

thedevice consists a measurement to time -to' time but ing operation, and required thickness 4 The device works by an indirect measuring process, that is to say,

it is adjusted to zero by a measuring sheet which corresponds to the thickness to be rolled, and then indicates,

the strip is running through, this normal dimension. -The the rolling; sees on a scale while its deviations from person supervising the extent of the deviations magnified one hundred fold" or even more, and is in a position to scribed maintain the preallowance without difiiculty by adjusting the spindles of the rolling mill nearer together or farther apart.

The material to'be measure two rollers, one of which is nalled,'so that it can easily d is placed between eccentrically jourbe rocked away from time to time, to facilitate the introduction of the material to be measured, b

or a hand who y actuating a crank el, so as to produce a larger gap between the two rollers, whereupon, after introducing the material-to be m easured, this roller is rocked back and the original normal position is reestablished in a reliable ond roll is so supported in the apparatus as to be larly to the axis, being firmly against the ma spring pressure.

at the manner. The seethe frame part of displaceable perpendicusame time pressed terial to be measured by The changes in the thickness of the material to be measured as compared with the normal thickness to which the device is initially adjusted are now second roll to the indi transmitted by the eating device, with the interposition of suitable transmission means, this second roll being pressed b The adjusting of the normal dimension is effe tioning the first roll while has to transmit the devia normal dimension to the Since the magnitude of the the ack, against the presmaterial to be measured.

device to the desired cted by suitably posisecond roll merely tions from the adjusted indicating device.

transmission ratio,

1929, Serial No. 388,831 June -10, 1929 and consequently the ratio the pointer, are limited by and on the other hand the APPARATUS FOR RoLLEn MATERIAL of the deflections of the space available,

convenience of the reading should not be impaired by excessively v high accuracy such quired, a second and ing to the invention which is influenced by 'the by virtue of a further high p reading as compare Finally the indicating ne'cted' with a recording permanent reco as is only occ shorter pointer may accordbe fitted to the-same device,

ermits in its turn of greater accuracyin d with the first pointer.

device may also be condevice, which 'makes a rd of the deviation asionally remain pointer, and, transmission ratio, the

measured.

The'recording' stylus is secured to a pivotally supportedlever, which is move by means of a positioning d from the pointer screw. The stylus then describes the deviations measured upon a paper strip moving past of magnification.

sibility that the stylu it, witha definite ratio Here again there is the poss may reproduce the deflection of the large pointer on an enlarged scale.

The strip of paper bea beside it an allowance line tance. Furthermore guides rs a mean zeroline, and

at the correct disare provided which holdthe strip of paper fast at the sides, in order that the reciprocating movements of the'stylu's may not displace the paper. of the rolled is cut off underneath the g strip the paper uide and attached as After the passage bearing the record a check strip to the material measured. I

The invention is illustrated by way of example in the accomp anying drawings in which:

Figure 1 shows a front elevation of the measuring device.

Figure 2 is a side in Figure 1.

elevation f 3v Figure 2 and,

Figure 4 is a section on Figure 1.

The device as a venient manner to the housing, a supporting provided, to which th of the device shown is a section on the line III-4H in the line IV-IV in whole is secured in any constandard 1 of the roll member 2 being preferably e under portion of a casing 3 is secured by means of screws 4. In the casing is arranged first of all a carrying roller 5 which is journalled in a bearing m ember 6, which is movable perpendicularly to the axis of the roll.

The roll 5 is mo eccentric central portion in rotating the shaft '7 through the amount of its eccenraised or lowered by tricity. 8 is a stop pin which and which, in the upper and unted upon a shaft '7 having an such a way that by the roll 5 can be is fitted to the shaft lower end positions of the roll 5, bears against corresponding stops 9, which are secured by a screw 11 to a cross plate 10, rigidly connected with the member 6. The rotating of the eccentric shaft 7 is effected by means of a hand wheel or a handle 12.

In order to adjust the device to the desired normal dimension the member 6, in which the roll 5 and therefore the eccentric shaft '7 are supported, is moved up and down inside the casing 3, the fine adjustment being effected by means of a screw threaded bolt 13, which is operated by a hand wheel 14, and is supported in a bearing member 15. After the member 6 has been adjusted, this member 6 is clamped by means of a screw 17, provided with a handle 16, for the purpose of guarding against subsequent shifting in consequence of vibration or the like. A pressure plate 18 is preferably also interposed between the pressure screw 17 and the member 6.

The second or upper roll 19 is supported by means of a pivot 20 and a sleeve 21 in a cylindrical sliding body 22, which is fitted into'the upper part of the casing 3 in such a manner as to slide easily therein, and is secured against rotation in the axial direction by a key 23. The body 22 has at opposite positions two longitudinal slots 24 through which projects a bolt 25, which is fixedly supported in the casing 3. Inside the body 22 there is mounted upon this bolt a pressure member 26, which serves as a bearing suzface for a spring 27, which presses with its lower end upon a closure plate 28, and thereby tends to press the body 22 downwards. By means of the longitudinal slots 24 the necessary vertical movability is given to the body 22. Upon the cylindrical body 22 is mounted a member 29, which is provided with knife edges 30, upon which is mounted the lever beam 31, for the supporting of which there serves at one end a shaft 33 provided with a knife edge 32, and at the other end a pressure spring 34, which bears at one end against the upper portion 35 of the casing and at the other end against the member 36 rigidly connected with the beam. The shaft 33 has in the centre a thickened portion, which, on the side facing the beam 31, is provided with a knife edge 32, so that the movement of this transmission lever may take place as easily as possible. The member 36 has a corresponding recess 37 so that the oscillating movement of the member 36 is not hindered by the thickening of the shaft 33. To the member 36 is fitted a pointer 38, the tip 39 of which moves in front of a scale 40, upon which the varying deflections corresponding to the deviations from the standard thickness can be read off. The scale 40 is suitably mounted on the support 53 extending from the upper end of the casing 35. As will be seen from Figures 1 and 3, the extremities of the knife edges 32 and 30 are arranged one above the other but are somewhat out of alignment, so that by the movement of the body 22 a rocking movement of the beam 31 is produced, and therefore a deflection of the pointer 38.

In order that there may be the possibility, besides taking readings from the scale 40, of also effecting readings of greater accuracy in special cases there is provided besides the scale 40 another scale 41, in front of which moves a second pointer 42. This pointer 42 has its pivot at 43, at a comparatively short distance from the scale. In the immediate neighborhood of the pivot 43 there acts a bolt 44, which is secured in the pointer 38 and transmits the movement of the pointer 38 to the pointer 42. The bolt 44 is adjustable in its axial direction by means of a screw thread in the pointer 38, so that the two pointers can be adjusted to the corresponding zero points. The pointer 42 is held constantly against the bolt 44 by a spring 45. In this manner the deflection of the pointer 38 is transmitted through the meium of the new transmission ratio with a corresponding magnification to the pointer 42, so that the associated deflection of the pointer 42 is correspondingly greater, and permits of a greater accuracy of testing.

What I claim is:

A measuring device for sheet material comprising a casing having a vertical bore in its upper part and a vertical guideway in its lower part alined with the bore, said bore and guideway being separated by a horizontal work-receiving recess in the casing, a bearing block mounted in the guideway, a lower roller journaled in the bearing and projecting at its periphery into the work-receiving recess, a tubular member vertically slidable in the casing bore, an upper roller journaled in the lower part of the tubular member to project its periphery into the work-receiving recess to coact with the lower roller, a bearing member in the upper part of the tubular member and fixed to the casing, a spring in the tubular member compressed between the lower part of the tubular member and the bearing member and normally tending to press said tubular member downward to press the upper roller against the material carried by the lower roller so that variations in the thickness of the material cause a corresponding movement of the tubular member in the casing bore against the action of the spring, and indicating means actuated by the movement of the tubular member in the casing bore.

RUDOLF KRONENBERG. 

